arm64: dts: rockchip: fix trailing 0 in rk3328 tsadc interrupts

Probably due to some copy-paste mistake, the tsadc of rk3328 ended up
with a 0 as 4th element that shouldn't be there, as interrupts on the
rk3328 only have multiples of 3, making dtc complain. So remove it.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>